Protection Relay Engineer

We are currently seeking an experienced Freelance Protection Relay Commissioning Engineer to support the delivery of multiple large-scale data centre projects across Europe.

This is an excellent opportunity to join a fast‑paced and growing sector, working on critical infrastructure projects for leading developers, EPC contractors, and hyperscale clients.

The successful candidate will play a key role in the testing, commissioning, troubleshooting, and energisation of HV/MV electrical systems, with a strong focus on protection relay systems and associated commissioning activities.

Responsibilities

• Commissioning and testing of HV/MV electrical systems within live and greenfield data centre environments
• Configuration, testing, and fault‑finding of protection relays
• Carrying out secondary injection testing and relay validation
• Protection scheme testing including interlocks, trip circuits, and logic checks
• Review and interpretation of electrical drawings, schematics, and protection philosophies
• Support energisation activities and switching operations where required
• Liaise with clients, OEMs, subcontractors, and commissioning teams on‑site
• Produce commissioning documentation, test records, and punch lists
• Ensure all works are completed in line with project specifications, safety standards, and commissioning procedures

Requirements

• Proven experience commissioning protection relay systems on mission critical, data centre, substation, or industrial projects
• Strong knowledge of protection relays including:
  • Experience with secondary injection testing equipment
  • Strong understanding of HV/MV systems and electrical protection principles
  • Ability to read and interpret electrical schematics and protection drawings
• Previous experience working on data centre projects is highly desirable
• EU passport or valid right to work in Europe preferred

Package

• Competitive daily rate
• Long‑term 12‑month contract
• Opportunity to work on high‑profile hyperscale data centre projects across Europe
• Flights, accommodation, and rotation package available depending on project location

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